An exciting new patent filing from Apple gives us a peek into the future of Nike+. From AppleInsider:

“. . . the system aims to more precisely track a runners performance over a period of time by factoring in various physical characteristics of the runner, such as age, weight, and gender, which could then be used to evaluate the runner’s performance against a reference performance typical of a person having similar physical characteristics.”

The upside is better run data and GPS features. The downside? It appears that you must purchase a special pair of GPS enabled Nike shoes. That sounds expensive.